mozilla-central/gfx/tests/browser/browser_native_font_cache_macos.js (file symbol)

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Test Info: Warnings

/* Any copyright is dedicated to the Public Domain.
"use strict";
add_task(async () => {
// Create a tab that loads a system font.
const CROSS_ORIGIN_DOMAIN = "https://example.com";
const TARGET_URL = `${CROSS_ORIGIN_DOMAIN}/browser/gfx/tests/browser/file_native_font_cache_macos.html`;
await BrowserTestUtils.withNewTab(
{ gBrowser, url: TARGET_URL },
async browser => {
await SpecialPowers.spawn(browser, [], async () => {
// Capture a snapshot of the tab, which will load the system font in the
// parent process.
const TARGET_WIDTH = 200;
const TARGET_HEIGHT = 100;
const rect = new content.window.DOMRect(
0,
0,
TARGET_WIDTH,
TARGET_HEIGHT
);
await SpecialPowers.snapshotContext(content.window, rect, "white");
});
}
);
// Now create a tab that shows the memory reporter.
await BrowserTestUtils.withNewTab(
{ gBrowser, url: "about:memory" },
async browser => {
// Click the "Measure" button.
await SpecialPowers.spawn(browser, [], () => {
let measureButton = content.document.getElementById("measureButton");
measureButton.click();
});
// Copy the page text and check for an expected start with string.
let copiedText = await new Promise(resolve => {
const REPORT_TIMEOUT_MS = 15 * 1e3;
const EXPECTED_START_WITH = "Main Process";
let mostRecentTextOnClipboard = "";
SimpleTest.waitForClipboard(
textOnClipboard => {
mostRecentTextOnClipboard = textOnClipboard;
const gotExpected = textOnClipboard.startsWith(EXPECTED_START_WITH);
if (!gotExpected) {
// Try copying again.
EventUtils.synthesizeKey("A", { accelKey: true });
EventUtils.synthesizeKey("C", { accelKey: true });
}
return gotExpected;
},
() => {
EventUtils.synthesizeKey("A", { accelKey: true });
EventUtils.synthesizeKey("C", { accelKey: true });
},
() => {
resolve(mostRecentTextOnClipboard);
},
() => {
info(`Didn't find expected text within ${REPORT_TIMEOUT_MS}ms.`);
dump("*******ACTUAL*******\n");
dump("<<<" + mostRecentTextOnClipboard + ">>>\n");
dump("********************\n");
resolve("");
},
"text/plain",
REPORT_TIMEOUT_MS
);
});
isnot(copiedText, "", "Got some text from clipboard.");
// Search the copied text for our desired pattern. Initially, check for
// a line with "native-font-resource-mac". If that exists, ensure that it
// has less than a maximum MB. If that doesn't exist, check instead for
// a line with "gfx" before the "Other Measurements" section. If that
// exists, it is tested against the same MB limit. If it doesn't exist,
// that is an indication that "gfx" doesn't occur in the first section
// "Explicit Allocations', and therefore isn't holding memory at all.
const MB_EXCLUSIVE_MAX = 20;
const nfrm_line = /^.*?(\d+)\.\d+ MB.*-- native-font-resource-mac/m;
const nfrm_match = nfrm_line.exec(copiedText);
if (nfrm_match) {
const nfrm_mb = nfrm_match[1];
Assert.less(
nfrm_mb,
MB_EXCLUSIVE_MAX,
`native-font-resource-mac ${nfrm_mb} MB should be less than ${MB_EXCLUSIVE_MAX} MB.`
);
} else {
// Figure out where the "Other Measurements" section begins.
const om_line = /^Other Measurements$/m;
const om_match = om_line.exec(copiedText);
// Find the first gfx line, and if it occurs before the "Other
// Measurements" section, check its size.
const gfx_line = /^.*?(\d+)\.\d+ MB.*-- gfx/m;
const gfx_match = gfx_line.exec(copiedText);
if (gfx_match && gfx_match.index < om_match.index) {
const gfx_mb = gfx_match[1];
Assert.less(
gfx_mb,
MB_EXCLUSIVE_MAX,
`Explicit Allocations gfx ${gfx_mb} MB should be less than ${MB_EXCLUSIVE_MAX} MB.`
);
} else {
ok(true, "Explicit Allocations gfx is not listed.");
}
}
}
);
});